Planer-chuck.



No. 882,943. l PATENTBD MAR. 24, 1908. L. H. G INN.

PLANER CHUCK.

I PLIUATION FILED AUG. 2Q. 1906.

2 SHEETS-SHEET 1.

GNN nesaw A the chucks thereon.

UNITED sTATEs PATENT OFFICE;

LAFAYETTE HALL GINN, OF ATLANTA, GEORGIA, ASSIGNOR OF ONE-HALF TO CLAYTON & BENTLEY OO., A CORPORATION OF GEORGIA.

PLANER-CHUCK.

Specification of Letters Patent.

Application filed August 29, 1906.

Patented March 24, 1908.

Serial No. 332,451.

To all lwhom it may concern:

Be it known that I, LAFAYETTE I-IALL GINN,citizen of the United States, residing at Atlanta, in the county of Fulton and State of Georgia, have invented certain new and useful Improvements in Planer-Chucks and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same..

My invention relates to new and useful improvements in planer chucks, and more particularly to that class adapted to be used in planing heavy metal plates, angular casting and the like of varying thicknesses, and my object is to provide means for adjusting and .securing the work to the bed of the planer with a minimum amount of labor, and in such manner that three sides of the article may be readily planed without readjustment or moving the same from the chucks.

A further object is to so mount the chucks upon the planer bed that the work may be readily adjusted at will to bring the upper surface of any article into a true horizontal plane and in position to be acted upon by the cutting tool.

A further object is to provide means for reliably securing the article to be planed between the chucks, and a still further object is to provide suitable ,means for locking and holding the chucks in an adjusted position.

lith these and other objects in view, the device consists of other novel features which will be hereinafter referred to in the specification, and more particularly pointed out in the claims.

`In the accomp-anyin drawings which are made a part of this app ication, and in which I have shown my preferred form of device, Figure 1 is a perspective view of a portion of a planer showing different manners of disposing the work on the bed thereof. Fig. 2 is a detail perspective view of a planer bed showing my improved chucks secured thereto. Fig. 3 is a detail elevation of a portion of the planer bed showing one manner of securing the work thereto. Fig. 4 is a sectional view through a portion of the planer bed showing the manner of adjustably securing Fig. 5 is a side elevation of one of the chucks removed from the planer bed, a portion thereof being in section. Fig. 6 is a detail sectional view through one of the chuck blocks, as seen from line 5-5'-,5- Fig. 5, showing the manner of adjusting the same. Fig. 7 is a similar view showing a slightly modiiied form of means for holding the chuck in its adjusted position, and Fig,

8 is a sectional view through that form off chuck used at the ends of the planer bed.

Referring to the drawings in which similar reference numerals designate corresponding parts throughout the several views, 1 indi-65 cates a planer bed, to one end of which i'sfsefcured the usual or any preferred formof planing mechanism having. tool heads 2 thereon, in which is properly secured the usual or-any preferred form of bit 3, said tool heads and bits being adapted to be driven from end to end of the planer bed by the operating mechanism. The bed 1 is provided with a plurality of longitudinally disposed slots 4, said slots extending throughout,

the length of the bed and are provided at their lower ends with channels 5 for a purpose to be hereinafter set forth.

A plurality of work holding devices commonly called chucks are disposed over the` surface of the planer bed 1, each of said' chucks having a base 6, which is provided on its lower surface with a tongue 7, which is adapted to engage the slots 4, while the u per surface of the base 6 is provided with a b ook 8 upon which is seated a head 9, the upper' surface of the head being provided with a plate 10, said plate being of less thickness than the head 9, and extending the full length thereof. The head 9 is referably adjustably mounted upon the b ook 8 by means of a depending stem 11, which is adj ustably disposed in a socket 12, extending vertically through the block 8. Each face of the plate 10 is provided with prongs 13, with which is adapted to engage one end of the metallic object being planed. The chucks proper are held in their adjusted position on the bed plate by disposing bolts 14 through the base 6 and tongue 7, the head of the bolts being preferably square and disposed in the channels 5, so that the bolts will be held against rotation, while the upper end of the bolt projects through the base 6 and is threaded to receive a nut 15 and by which bed and heldin its adjusted position. j

The head 9 is held in its adjusted position above the block 8 by means of a set screw 16, which is disposed through a threaded bore 17 means the chuck is clamped upon the planer j in the end of the block 8, the inner end of the f set screw being disposed into engagement with the stem 1.1., so that when the head 9 has been properly raised or lowered, the set screw l16 is turned inwardly until it clamps the stem 11, thereby securely holding the head in its adjusted position. lf desired however, instead of employing set screws'to adjustably secure the heads in position above v the blocks 8, each of the stems may be proi l vided with a plurality of openings 18, with Awhich is adapted to engage a locking pin 1.9 which in this instance is disposed through one side of the block 8, the outer end of the A 1'5 locking pin being provided with a head 20 by which means the pin is removed from engagement with the openings in the stems.

A spring 21 is secured to the base 6 and has its free end disposed into engagement k with the head 20 so that an inward pressure will be directed against the locking pin 19, thereby insuring that the pin will be directed inwardly at all times to engage one of the openings in the stems.

25 lVhile my improved chuck may be employed in connection with any class of work, it is peculiarly adapted for use in properly securing that form of device shown 1n Figs. 1 and 3 in position to be planed, and as d best shown in Fig. 1 of the drawing one set of chucks are employed to secure metallic devices 22 to the planer bed, the set of metallic Y devices being substantially trough-like and the bottom portion 23 thereof of uniform i' 35 thickness throughout its length, and as best shown in said ligure, a plurality of the metallic devices may be disposed upon the planer bed at one and the same time by employing several of the chucks and disposing one bei 40 tween each of the metallic devices, the .ends

of each of the metallic devices being disposed. into engagement with the conical prongs 13 by means of end chucks 24, one of which is disposed at each end of the row of metallic 45 devices and are provided with clamping bolts 25, and by directing the lclamping bolts into engagement with the ends of the two end devices 22, all of said devices may be locked into engagement with their respective. chucks,

and when so disposed it will be seen that the surface and two sides of the metallic devices l can be planed without changing the position of the devices in the chuck. l have also shown in Fig. 1 of the drawing a portion of the chucks employed in securing a plurality vof metallic devices 26 upon the planer bed, the general outline of which is similar to the metallic devices 22, but in this instance the upper surface of the bottoms 27 are tapered or thicker at one end, and in order to plane a plurality of the bottom surfaces of the metallic devices 26, it is necessary to elevate one end of each of the devices 26 until the tapered surface of the bottom portion 27 is in the same plane as the upper surface of the planer bed and to accomplish this result, l employ my improved chuck, and it will be seen that by elevating the head of the chuck between each pair of metallic devices and leaving the heads of the chucks between the opposed airs of metallic devices in their normally lbwered position, -that the tapered surfaces of the bottom sections of the metallic devices may be disposed in a common plane, so that the bits in passing from end to end of the planer bed, will engage the tapered surface the full length of its stroke.

When articles having straight or uniform surfaces are to be laned, it is not necessary to have the hea s 9 adjustably mounted 30 upon the base 6, and in this instance the head may be made rigid with the base if desired as shown in Figs. 1 and 2. However, if it is not convenient to provide the rigid head as well as the adjustable head, every feature of the rigid head may be' accomplished by lowering the adjustable head to its lowest point and securing the same in this position by means ofthe set screws.

In planing surfaces where it is necessary t elevate one end of each article to bring the surfaces thereof in a common plane, both forms of chucks may be used at the same time, the chucks having the stationary heads A being employed between the opposed ends of the pairs of devices, while the chucks having the adjustable heads are disposed between the ends to be elevated, and it will also be seen that if desired, the chucks may be simi-v larly disposed when in use upon articles` hav'- `100 ing uniform surfaces, as the adjustable chuck is substantially the same height as the solid chuck when the head 9 is lowered or resting upon the block 8. It will also be seen thatJ by employing my improved chuck that anf object having a uniform thickness may be so disposed upon the planer bed that a tapered surface will be imparted thereto, although the bit is traveling in a uniform plane over the bed.

It will now readily be seen that l have provided a chuck which is adapted to be employed for securing any class of work to the bed of a planer, and that a number of articles can be quickly secured in position upon the bed, and it will further be seen that a tapered surface on the articles can be readily disposed to receive the full stroke of the bit in passing thereover.

What l claim is:

1. A chuck of the class described, comprising a base, a head on said base, a plate rising from said head and provided with prongs on its vertical face, and means whereby said head may be adjusted vertically and means to hold it in its adjusted position, said head having substantially horizontal shoulders in proximity to said prongs to receive and support the end of the article being actedv upon.

2. A chuck of the class described comvertically adjusted position on said block, an prising a base, a block on said base, a head upstanding plate on said head having suphaving lateral prongs and shoulders to supports for the ends of the article to be planed, port the end of the article to be planed, a and prongs on said plate above said supports. l5

5 stern on said head adapted to engage an In testimony whereof I have signed my o ening in said block and means carried by name to this specification in the presence of t e block ada ted to engage said stem and two subscribing Witnesses. hold the head 1n its adjusted position. LAFAYETTE HALL GINN.

3. In a device of the class described, a Witnesses: 10 chuck comprising a base, a block on said E. S. LUMPKIN, base7 a head7 means to secure said head in R. M. BILLARD. 

